Moments of discovery are often accompanied by surprised laughter;
when I heard laughter he could took it as a cue that there might be something going on that was worth looking at.
Laughter itself is a very useful behavioral reference point.
Most people can distinguish genuine laughter from artificially forced good humor if they put their mind to it.
Don’t ever work in advertising.
‘I work in advertising; I sell Doritos.’ ‘Fuck OFF!’
Humor should not be forgotten as a way to sell products! It is a bonding element between human beings: if you can make someone laugh, he will feel friendlier toward you and perhaps even remember you!
Humor is effective when product-centric and relevant to a sale message.